700r4 convert mating to a 283 crank

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700r4 convert mating to a 283 crank

Postby Chevymudterrain » Wed Feb 08, 2017 1:22 pm

Does anyone know if a 283 crank will accept a 700r4 converter pilot I'm having an issue here with clearance my converter will not slide up into the 283 crank , do I need to buy a spacer for my flex plate?
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Re: 700r4 convert mating to a 283 crank

Postby Cardinal » Sat Feb 10, 2018 9:50 am

I think it should slip right in.

Was the engine on a manual transmission which means it still has the pilot bearing in the end of the crank so you have to remove the pilot bearing.

How to remove the pilot bearing: Do you have one of those clutch alignment tools or a cut a broom handle off and grind it to fit in the pilot bearing. Fill the center of the pilot bearing with MPG2 (grease gun grease). Drive the alignment tool (or broom handle piece) into the bearing which will hydraulically press the bearing out.
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Re: 700r4 convert mating to a 283 crank

Postby lowblazin94 » Sat Feb 10, 2018 10:47 am

Do you have measurements or pictures? Might be a tight fit but it should go in just fine.
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Re: 700r4 convert mating to a 283 crank

Postby Rickracer » Sun Feb 11, 2018 7:47 am

Cardinal wrote:How to remove the pilot bearing: Do you have one of those clutch alignment tools or a cut a broom handle off and grind it to fit in the pilot bearing. Fill the center of the pilot bearing with MPG2 (grease gun grease). Drive the alignment tool (or broom handle piece) into the bearing which will hydraulically press the bearing out.

This method works very slick.
Another one I've used that's less messy is to take a bolt that won't quite fit in the pilot hole, cut some slots in it lengthwise, to make it like a tap, then just run it into the pilot hole with an impact. Once you've made either or both the the above mentioned tools, just keep them handy, chances are, one day you'll use them again.... :thumbup:
If the converter won't fit, chances are it's just rust or some burrs that make it not fit. Some emery cloth should polish up the converter pilot hub, and the edge of a 2" scotchbrite surface prep disc should do the same for the crank pilot hole. 8)
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'93 S10 SB,RC, Comp XR276 Hydraulic Roller, Vortec head 363, 400 + hp, built 700R4, JW 2800 stall lockup converter, 3.73 posi, disc brake, narrowed 8.8 Exploder rear, LS Camaro front discs, Cal-Trac clone traction bars, Best N/A passes to date: 7.76 in the 1/8th, 12.24@109.27 mph in the 1/4, gonna spray it one of these days... :mrgreen:
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Re: 700r4 convert mating to a 283 crank

Postby jkline » Mon Feb 12, 2018 7:51 pm

It should absolutely fit without issue. Maybe some rust or burrs to remove. Oh and ,yes, remove the pilot bushing if it is there.
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Re: 700r4 convert mating to a 283 crank

Postby Rickracer » Wed Feb 14, 2018 8:17 am

Pilot bushing should not cause an issue unless it isn't fully seated. It sits back in a recess further than the converter pilot will reach. :wink: 8)
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ASE Certified Master Automotive Technician (well over 3 decades of experience, :thumbup: )
'93 S10 SB,RC, Comp XR276 Hydraulic Roller, Vortec head 363, 400 + hp, built 700R4, JW 2800 stall lockup converter, 3.73 posi, disc brake, narrowed 8.8 Exploder rear, LS Camaro front discs, Cal-Trac clone traction bars, Best N/A passes to date: 7.76 in the 1/8th, 12.24@109.27 mph in the 1/4, gonna spray it one of these days... :mrgreen:
76 Chevy Vega Drag Car, TWIN TURBO 355, P/G trans w/ brake and JW 4000 stall vert, 4 link back half, narrowed 9", 3.50 gears, 29.5x10.5W ET Drags. Best time9.669 @ 139.79, Latest video: https://www.youtube.com/watch?v=S59riYn ... ata_player
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Re: 700r4 convert mating to a 283 crank

Postby jkline » Wed Feb 14, 2018 7:41 pm

Quite right Rick. I have seen many that were not fully seated. He could just drive it in further rather than remove. Good point.
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Re: 700r4 convert mating to a 283 crank

Postby Cardinal » Wed Feb 14, 2018 10:18 pm

One VERY important thing just came to me: are you ABSOLUTELY POSITIVELY sure that the converter is seated ALL the way into the transmission pump?????

IF it ISN'T, then you can (and will) DESTROY the pump! I know because 48 years ago when I did my first engine swap (283 into my 64 Chevy II), I ruined the Powerglide because I didn't have the converter seated on the keyway!
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Re: 700r4 convert mating to a 283 crank

Postby Rickracer » Thu Feb 15, 2018 8:10 am

Cardinal wrote:One VERY important thing just came to me: are you ABSOLUTELY POSITIVELY sure that the converter is seated ALL the way into the transmission pump?????

The best way to check this is to lay a straight edge across the mating face of the trans and measure from there to a mounting lug on the front of the converter, then do a measurement from the back of the block mating face to the back edge of the flexplate. If the trans-to-converter measurement isn't greater than the flexplate distance measurement by at least 1/8" to 1/4", the converter isn't all the way in. :wink: 8)
Rickracer
ASE Certified Master Automotive Technician (well over 3 decades of experience, :thumbup: )
'93 S10 SB,RC, Comp XR276 Hydraulic Roller, Vortec head 363, 400 + hp, built 700R4, JW 2800 stall lockup converter, 3.73 posi, disc brake, narrowed 8.8 Exploder rear, LS Camaro front discs, Cal-Trac clone traction bars, Best N/A passes to date: 7.76 in the 1/8th, 12.24@109.27 mph in the 1/4, gonna spray it one of these days... :mrgreen:
76 Chevy Vega Drag Car, TWIN TURBO 355, P/G trans w/ brake and JW 4000 stall vert, 4 link back half, narrowed 9", 3.50 gears, 29.5x10.5W ET Drags. Best time9.669 @ 139.79, Latest video: https://www.youtube.com/watch?v=S59riYn ... ata_player
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